是否可以在执行PHP脚本的每一行后运行PHP函数？

我的问题与此类似： Is it possible to run code after each line in Ruby?
但是我想用PHP来做.

是否可能,如果可能,怎么样？

你可以 register一 tick handler：

Ticks

A tick is an event that occurs for every N low-level tickable statements executed by the parser within the declare block. The value for N is specified using ticks=N within the declare blocks’s directive section.

Not all statements are tickable. Typically,condition expressions and argument expressions are not tickable.

正如您所看到的,它不完全是“每行代码”,除非您每行只写一个可选择的语句.但它是你能得到的最接近的.

例：

declare(ticks=1);
register_tick_function(function() {
    echo "tick_handler() called\n";
});

echo 'Line 1',PHP_EOL;
echo 'Line 2',PHP_EOL;
echo strtoupper('Line 3'),PHP_EOL;

将输出(demo)：

tick_handler() called
Line 1
tick_handler() called
Line 2
tick_handler() called
LINE 3
tick_handler() called

原文地址：https://www.jb51.cc/php/240123.html