ZEND_STRLEN      2923 Zend/zend_compile.c 		zend_emit_op_tmp(result, ZEND_STRLEN, &arg_node, NULL);
ZEND_STRLEN      7699 Zend/zend_vm_def.h ZEND_VM_HANDLER(121, ZEND_STRLEN, CONST|TMPVAR|CV, ANY)
ZEND_STRLEN       589 ext/opcache/Optimizer/pass1_5.c 		case ZEND_STRLEN: